Can I pull a single character froma string?

I'm trying to pull a single character from a user defined string.

A = "Hello, World";
B = "W";

I have A, I want to get B from it. I have tried

B = A(end-3);

as well as

B = A(8);

the former gave me the following error "Subscript indices must either be real positive integers or logicals," and the latter worked about as well as is expected.

[Stephen23]

The whole point of strings is that they are atomic, and each string constitutes one whole element of a string array. So what you are doing is a bit contradictory to the concept of a string. Of course getting one character of a character array is trivially easy, so you could just convert the string to a char array and use indexing.

Answer 1

[James Tursa]

See this link for getting substrings from strings:

https://www.mathworks.com/matlabcentral/answers/351195-manipulating-strings-defined-with-the-new-double-quote-option